[mapguide-internals] RE: Motion: RFC 30 - FDO Configuration

Robert Bray rbray at robertbray.net
Wed Sep 19 19:09:00 EDT 2007


We are re-thinking this one a bit, hence the silence from the authors. 
Stay tuned...


Frank Warmerdam wrote:
> Jason Birch wrote:
>> Hi all,
>> The more I think about this RFC, the less I feel that it is a good 
>> idea to
>> link the web tier directly against FDO and use the overrides.  It 
>> breaks the
>> nice hierarchical architecture of MapGuide, and ties into a section of 
>> FDO
>> is not all that well understood outside of the core development team.
>> Personally, I think that it would be easier to maintain going forward 
>> with a
>> back end that generates config files using simple sprintf's against 
>> template
>> XML, like I did with my cruddy little PHP script for creating raster 
>> config
>> files.
> Folks,
> I avoided commenting on this RFC before because it is a MapGuide RFC, and
> because I just didn't understand a lot about it.
> But I am wondering if the RFC 30 utility stuff will be built on the FDO
> raster provider override API or will it just construct configuration xml?
> I'd like to discourage use of the raster provider override api, partly
> because while the GDAL and ATIL raster providers use the same configuration
> files, it is not at all clear that the override apis are exactly the same.
> When I added bounds support I was not aware of any particular requirements
> on how override api stuff should be named, etc.  (I'm still not clear on
> this).
> Perhaps it was never the intent to use the override api for this purpose?
> I certainly can't see how use of the override api would work if we want
> folks to be able to introduce new raster providers in the future without
> this utility having to be recompiled.
> Actually, another thing that was unclear to me is whether this
> configuration utility will have an actual UI or is it just classes?
> If it is just a bunch of classes to produce config xml it seems ... well
> like a lot of stuff that doesn't do much.  But perhaps I'm just exposing
> my roots as a hacker instead of a good software engineer...
> Best regards,

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